Alibaba.com offers 1,354 hollow copper balls products. About 27% of these are stainless steel balls, 19% are bearing balls, and 4% are pendants & charms. A wide variety of hollow copper balls options are available to you, such as brass, stainless steel. You can also choose from aisi, gb. As well as from 300 series, 400 series, and 200 series. And whether hollow copper balls is sgs, iso, or rohs. There are 1,359 hollow copper balls suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and India, which supply 99%, 1%, and 1% of hollow copper balls respectively. Hollow copper balls products are most popular in North America, Western Europe, and Eastern Asia. You can ensure product safety by selecting from certified suppliers, including 197 with ISO9001, 69 with Other, and 31 with ISO/TS16949 certification.